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DIALOG(1)							     DIALOG(1)

NAME
       dialog -	display	dialog boxes from shell	scripts

SYNOPSIS
       dialog --clear
       dialog --create-rc file
       dialog  [ --title title ] [ --clear ] [ --hline line ] [	--hfile	file ]
       box-options

DESCRIPTION
       Dialog is a program which allows	you to present a variety of  questions
       or  display  messages in	dialog box form	from a shell script.  The fol-
       lowing types of dialog objects are currently supported:

       yes/no box, menu	box, input box,	 message  box,	text  box,  info  box,
       checklist box, program box, ftree and tree boxes.

OPTIONS
       --clear
	      The screen will be cleared to the	screen attribute on exit.

       --create-rc file
	      Since  dialog  supports run-time configuration, this can be used
	      to dump a	sample configuration file to  the  file	 specified  by
	      file.

       --title title
	      Specifies	 a title string	to be displayed	at the top of the dia-
	      log box.

       --hline line
	      Specifies	a line string to be displayed at  the  bottom  of  the
	      dialog box.

       --hfile file
	      Specifies	a file to be displayed by pressing ? or	F1.

       Box Options

       --yesno text height width [ yes | no ]
	      A	yes/no dialog box of size height rows by width columns will be
	      displayed. The string specified by text is displayed inside  the
	      dialog  box.  If	this string is too long	to fit in one line, it
	      will be automatically divided into multiple lines	at the	appro-
	      priate  points.  The text	string may also	contain	the sub-string
	      "\n" or newline characters `\n' to control line breaking explic-
	      itly.   This  dialog  box	 is  useful  for asking	questions that
	      require the user to answer either	yes or no.  The	dialog box has
	      a	 Yes  button  and  a  No  button, in which the user can	switch
	      between by pressing the TAB key.	A Yes button  is  selected  by
	      default unless no	is specified.

       --msgbox	text height width
	      A	message	box is very similar to a yes/no	box.  The only differ-
	      ence between a message box and a yes/no box is  that  a  message
	      box  has only a single OK	button.	You can	use this dialog	box to
	      display any message you like.  After reading  the	 message,  the
	      user  can	 press	the ENTER key so that dialog will exit and the
	      calling shell script can continue	its operation.

       --infobox text height width
	      An info box is basically a message box.  However,	in this	 case,
	      dialog will exit immediately after displaying the	message	to the
	      user. The	screen is not cleared when dialog exits, so  that  the
	      message will remain on the screen	until the calling shell	script
	      clears it	later. This is useful when you want to inform the user
	      that  some operations are	carrying on that may require some time
	      to finish.

       --inputbox text height width
	      An input box is useful when  you	want  to  ask  questions  that
	      require  the user	to input a string as the answer. When inputing
	      the string, the BACKSPACE	key can	 be  used  to  correct	typing
	      errors.  If the input string is longer than can be fitted	in the
	      dialog box, the input field will be scrolled. On exit, the input
	      string will be printed on	stderr.

       --textbox file height width
	      A	 text  box  lets  you display the contents of a	text file in a
	      dialog box. It is	like a simple text file	viewer.	The  user  can
	      move  through  the  file	by  using  the	UP/DOWN, PGUP/PGDN and
	      HOME/END keys available on most keyboards.  If the lines are too
	      long to be displayed in the box, the LEFT/RIGHT keys can be used
	      to scroll	the text region	horizontally.  For  more  convenience,
	      forward and backward searching functions are also	provided.

       --menu text height width	menu-height [ tag item ] ...
	      As  its  name  suggests,	a menu box is a	dialog box that	can be
	      used to present a	list of	choices	in the form of a menu for  the
	      user  to choose. Each menu entry consists	of a tag string	and an
	      item string. The tag gives the entry a name  to  distinguish  it
	      from the other entries in	the menu. The item is a	short descrip-
	      tion of the option that the entry	represents. The	user can  move
	      between the menu entries by pressing the UP/DOWN keys, the first
	      letter of	the tag	as a hot-key, or the number  keys  1-9.	 There
	      are  menu-height	entries	displayed in the menu at one time, but
	      the menu will be scrolled	if there are more entries  than	 that.
	      When  dialog  exits,  the	 tag  of the chosen menu entry will be
	      printed on stderr.

       --prgbox	command	height width
	      A	program	box lets you display output of command in dialog  box.

       --checklist text	height width list-height [ tag item status ] ...
	      A	 checklist box is similar to a menu box	in that	there are mul-
	      tiple entries presented in the form of a menu. Instead of	choos-
	      ing  one entry among the entries,	each entry can be turned on or
	      off by the user. The initial on/off state	of each	entry is spec-
	      ified  by	 status.   On exit, a list of the tag strings of those
	      entries that are turned on will be printed on stderr.

       --ftree file FS text height width menu-height
	      ftree box	is a dialog box	showing	the tree described by the data
	      from  the	 file  file.   The  data  in the file should look like
	      find(1)  output. For the find output,  the  field	 separator  FS
	      will  be '/'. If height and width	are positive numbers, they set
	      the absolute size	of the whole ftree box.	If  height  and	 width
	      are negative numbers, the	size of	the ftree box will be selected
	      automatically.  menu-height sets the height of the tree  subwin-
	      dow  inside the ftree box	and must be set.  text is shown	inside
	      the ftree	box above the tree subwindow and can  contain  newline
	      characters  '\n' to split	lines. One can navigate	in the tree by
	      pressing UP/DOWN or  '+'/'-',  PG_UP/PG_DOWN  or	'b'/SPACE  and
	      HOME/END or 'g'/'G'.  A leaf of the tree is selected by pressing
	      TAB or  LEFT/RIGHT  the  OK  button  and	pressing  ENTER.   The
	      selected	leaf  (to  be more exact, the full path	to it from the
	      root of the tree)	is printed to  stderr.	 If  Cancel  and  then
	      ENTER  is	 pressed, nothing is printed to	stderr.	 file may con-
	      tain data	like find(1) output, as	well as	 like  the  output  of
	      find(1)  with  -d	 option.  Some	of  the	transient paths	to the
	      leaves of	the tree may be	absent.	Such data  is  corrected  when
	      fed from file.

       --tree FS text height width menu-height [ item ]	...
	      tree box is like ftree box with some exceptions. First, the data
	      is not entered from a file, but from the command	line  as  item
	      item  ...	 Second, the data thus entered is not corrected	in any
	      way.  Thus, the data like	the output of find(1) with  -d	option
	      will look	incorrectly.

RUN-TIME CONFIGURATION
       1.  Create a sample configuration file by typing:

		 "dialog --create-rc <file>"

       2.  At start, dialog determines the settings to use as follows:

	   a)  if  environment	variable DIALOGRC is set, its value determines
	       the name	of the configuration file.

	   b)  if the file in (a) can't	be found, use the file $HOME/.dialogrc
	       as the configuration file.

	   c)  if the file in (b) can't	be found, use compiled in defaults.

       3.  Edit	 the  sample configuration file	and copy it to some place that
	   dialog can find, as stated in step 2	above.

ENVIRONMENT
       DIALOGRC	      Define this variable if you want to specify the name  of
		      the configuration	file to	use.

FILES
       $HOME/.dialogrc	   default configuration file

DIAGNOSTICS
       Exit  status is 0 if dialog is exited by	pressing the Yes or OK button,
       and 1 if	the No or Cancel button	is pressed. Otherwise, if errors occur
       inside  dialog  or  dialog  is exited by	pressing the ESC key, the exit
       status is -1.

SEE ALSO
       dialog(3)

BUGS
       Text files containing tab characters may	cause problems with text  box.
       Tab  characters	in  text files must first be expanded to spaces	before
       being displayed by text box.

       Screen update is	too slow.

       The ftree and tree boxes	do not allow the tree to be moved to the  left
       or  to  the  right. Thus, if there are many levels of data, some	of the
       leaves can be rendered invisible. A standard display with 80 characters
       allows  for  17 levels to be visible. Deeper levels are invisible. How-
       ever, the navigation in the tree	and selection of leaves	do work.

AUTHOR
       Savio Lam (lam836@cs.cuhk.hk)

       Changes by Anatoly A. Orehovsky (tolik@mpeks.tomsk.su) (ftree and  tree
       boxes)

				2 October 1998			     DIALOG(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | RUN-TIME CONFIGURATION | ENVIRONMENT | FILES | DIAGNOSTICS | SEE ALSO | BUGS | AUTHOR

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